Lennox G26 furnace shuts off after 5min

[vikes69]

I have Lennox G26Q4/5-125-1 furnace. Sicne starting it this fall unti runs for about 5 minutes and the shuts off. I have been trouble shooting it for a couple of days but it will not restart until after about 3 hours after shutoff. The Johnson Control Ignition Control (G77GRGD-10) has the LED on when it is working but it shuts off when the unit trips. It seems like the pressure switch and overtemp switch
are okay. I am ready fto replace the Ingnition module but I am not sure it is a symptom or the problem.

Thanks in advance